For the best answers, search on this site https://shorturl.im/aQnO1. The standard atmosphere (symbol: atm) is an international reference pressure defined as 101325 Pa and formerly used as a unit of pressure.
stringer - a member of a squad on a team; a first stringer; a second stringer. team, squad - a cooperative unit (especially in sports) player, participant - a person who participates in or is skilled at some game.
Stair stringers are the angular supports where the treads and risers connect to form the stairs. They look like large wooden saw blades, and they are designed simply as a base for the stairs. They are used in homes, on decks and anywhere else stairs are installed. To attach them you can use a variet.